CN116005089A - Method for preparing TA18 titanium alloy large-size bar with high flaw detection level by short process - Google Patents
Method for preparing TA18 titanium alloy large-size bar with high flaw detection level by short process Download PDFInfo
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- CN116005089A CN116005089A CN202211608235.XA CN202211608235A CN116005089A CN 116005089 A CN116005089 A CN 116005089A CN 202211608235 A CN202211608235 A CN 202211608235A CN 116005089 A CN116005089 A CN 116005089A
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- 238000000034 method Methods 0.000 title claims abstract description 60
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 19
- 238000001514 detection method Methods 0.000 title claims abstract description 19
- 238000005242 forging Methods 0.000 claims abstract description 124
- 238000010438 heat treatment Methods 0.000 claims abstract description 48
- 238000000137 annealing Methods 0.000 claims abstract description 6
- 238000001953 recrystallisation Methods 0.000 claims abstract description 6
- 229920000742 Cotton Polymers 0.000 claims description 24
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 24
- 238000001816 cooling Methods 0.000 claims description 21
- 238000004321 preservation Methods 0.000 claims description 13
- 238000000265 homogenisation Methods 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000003723 Smelting Methods 0.000 claims description 3
- 238000000462 isostatic pressing Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910020890 PHI 650 Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of thermal processing of titanium alloy, and relates to a method for preparing a TA18 titanium alloy large-size bar with a high flaw detection level by a short process. The method comprises the following steps: heating the blank for the first time at 1180-1200 ℃ and adopting forging/drawing alternate deformation parallel to the streamline direction; heating the first intermediate blank for the second time at 840-860 ℃ and adopting forging/drawing alternate deformation perpendicular to the streamline direction; carrying out recrystallization annealing heat treatment on the second intermediate blank, and preserving heat for 6-8 hours at the temperature of 820-840 ℃; heating the crystallized and annealed second intermediate blank for the third time at 1080-1100 ℃ and adopting forging upsetting/pulling alternate deformation parallel to the streamline direction; heating the third intermediate blank for the fourth time, and forging, upsetting and pulling the third intermediate blank to deform alternately in the direction perpendicular to the streamline direction to obtain a fourth intermediate blank; and heating the third intermediate blank for the fifth time at 940-960 ℃, and adopting forging/drawing alternate deformation parallel to the streamline direction.
Description
Technical Field
The invention belongs to the technical field of thermal processing of titanium alloy, and relates to a method for preparing a TA18 titanium alloy large-size bar with a high flaw detection level by a short process.
Background
TA18 is a near alpha titanium alloy suitable for parts with working temperature below 315 ℃ and high strength, good oxidation resistance and excellent welding performance. The alloy is widely used for manufacturing hydraulic, fuel oil, lubricating oil, air and other pressure-bearing structural members of aircraft engines. In general, large TA18 titanium alloy forgings are produced in a mode of rough forging, die forging or direct die forging by directly using bars, and if the large TA18 titanium alloy forgings are produced by using bars with the specification of phi 350mm or more, the phenomenon of unqualified flaw detection level of the forgings often occurs. And once this occurs, it cannot be repaired or otherwise improved by heat treatment, but can be disposed of only. At present, the domestic large-size TA18 bar, particularly the specification with the diameter of more than 350mm, is required to be subjected to proper cogging forging on the raw materials before forging the forging piece, so that the flaw detection level of the large-size raw materials is improved, but the common cogging method generally has the defects of long flow, complex working procedure and high required loss, and the phenomenon of unqualified flaw detection often occurs.
Disclosure of Invention
The purpose of the invention is that: the method for preparing the TA18 titanium alloy large-size bar with high flaw detection level by a short process is provided, so that the problem of the flaw detection level of the large TA18 forging is solved.
The technical scheme is as follows:
a method for preparing a TA18 titanium alloy large-size bar with high flaw detection level by a short process comprises the following steps:
step 1: carrying out homogenization heat treatment on the TA18 titanium alloy cast ingot subjected to three times of vacuum consumable smelting to obtain a blank;
step 2: heating the blank for the first time at 1180-1200 ℃ and adopting forging/drawing alternate deformation parallel to the streamline direction to obtain a first intermediate blank;
step 3: heating the first intermediate blank for the second time at 840-860 ℃ and adopting forging/drawing alternate deformation perpendicular to the streamline direction to obtain a second intermediate blank;
step 4: carrying out recrystallization annealing heat treatment on the second intermediate blank, and preserving heat for 6-8 hours at the temperature of 820-840 ℃;
step 5: heating the crystallized and annealed second intermediate blank for the third time at 1080-1100 ℃ and adopting forging upsetting/pulling alternate deformation parallel to the streamline direction to obtain a third intermediate blank;
step 6: heating the third intermediate blank for the fourth time at 1050-1080 ℃ and adopting forging/drawing alternate deformation perpendicular to the streamline direction;
step 7: and heating the third intermediate blank for the fifth time at 940-960 ℃, and adopting forging/drawing alternate deformation parallel to the streamline direction.
Heating temperature for homogenization treatment of TA18 titanium alloy: 1180-1260 ℃ and preserving heat for 60-90 h.
In the first heating process, forging upsetting/pulling alternate deformation parallel to the streamline direction is adopted, and the method comprises the following steps:
upsetting, drawing and chamfering 8 sides are carried out within 1 fire time;
the first intermediate blank is padded after forging, and aluminum silicate heat-insulating cotton is covered for cooling;
wherein, the upsetting process adopts a ring/square tool to control the size and shape of the outer contour; the deformation of a single working step in the upsetting/drawing process is controlled to be 50% -70%; the final forging temperature is more than or equal to 960 ℃.
In the second heating process, forging upsetting/pulling alternate deformation perpendicular to the streamline direction is adopted, and the method comprises the following steps:
upsetting, drawing and chamfering 8 sides are carried out within 1 fire time;
the second intermediate blank is padded after forging, and aluminum silicate heat-insulating cotton is covered for cooling;
wherein, the upsetting process adopts a square tool to control the external contour size and shape, the deformation is controlled to be 55-70%, and the final forging temperature is more than or equal to 750 ℃.
In the third heating process, forging upsetting/pulling alternate deformation parallel to the streamline direction is adopted, and the method comprises the following steps:
upsetting, drawing and chamfering 8 sides are carried out within 1 fire time;
the third intermediate blank is padded after forging, and aluminum silicate heat-insulating cotton is covered for cooling;
wherein, the upsetting process adopts a square tool to control the external contour size and shape, the deformation is controlled to be 30-50%, the final forging temperature is more than or equal to 985 ℃, and aluminum silicate heat preservation cotton with upper and lower covers is padded after forging for cooling.
In the fourth heating process, forging upsetting/pulling alternate deformation perpendicular to the streamline direction is adopted, and the method comprises the following steps:
upsetting, drawing and chamfering 8 sides are carried out within 1 fire time;
the fourth intermediate blank is padded after forging, and aluminum silicate heat-insulating cotton is covered for cooling;
wherein, the upsetting process adopts a square tool to control the external contour size and shape, the deformation is controlled to be 30-50%, and the final forging temperature is more than or equal to 900 ℃.
In the fifth heating process, forging upsetting/pulling alternate deformation horizontal to the streamline direction is adopted, and the method comprises the following steps:
upsetting, drawing out and rounding are carried out within 1 fire time;
after forging, the aluminum silicate heat-insulating cotton with upper and lower covers is padded up for cooling, and cogging is completed;
wherein, the upsetting process adopts a ring/square tool to control the external contour size and shape, the rolling is carried out after the drawing, the deformation is controlled to be 20-40%, and the final forging temperature is more than or equal to 750 ℃.
The method further comprises the steps of:
if the deformation cannot be achieved in one fire in the first or second heating process, performing multi-fire pre-deformation, and not exceeding 3 fire in total.
The beneficial effects are that:
the common large TA18 forgings are usually produced by using large-specification (particularly more than phi 350 mm) bars, the flaw detection level of the bars is in the B level (such as phi 3.2), and if the bars are forged according to the conventional rough forging, die forging or direct die forging method, the forgings with high flaw detection level (such as phi 0.8/-12dB or phi 0.8/-9 dB) cannot be obtained. Through adding extra cogging to large-size bars before barren and die forging and combining with die tooling forging, the problem that the flaw detection level of the original large-size bars is low can be effectively solved, and the flaw detection level and the market competitiveness of products can be effectively improved.
Drawings
FIG. 1 is a process flow diagram of a method for preparing a high flaw detection level TA18 titanium alloy large-size bar in a short process.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below. It will be apparent that the described embodiments are some, but not all, embodiments of the invention.
First, we have found through repeated studies that the microstructure of the specimen in which flaw detection failure occurs has a common point that the as-cast structure has different degrees of segregation in which a heterogeneous compound phase is distributed. In large-size (such as the specification of phi 350mm or more) cast ingots, the structure is not fully refined, and casting defects such as micro-porosity and air holes with uneven distribution exist. If the conventional rough forging and die forging scheme is directly adopted, immeasurable losses are likely to be caused to the forged piece products. The scheme of cogging forging is added before the steps of barren making and die forging, so that the problem of poor structural foundation of large-size bars can be effectively solved, and in consideration of the characteristic that TA18 alloy is extremely easy to crack in the free forging process, the deformation mode, the deformation temperature range and the deformation degree range of cogging must be fully considered when a cogging process is formulated, otherwise, the scheme cannot be implemented.
The invention discloses a short-flow high-flaw detection horizontal TA18 titanium alloy bar cogging method, which comprises the following steps of homogenizing heat treatment before forging, parallel streamline deformation, vertical streamline deformation, recrystallization annealing, parallel streamline deformation and vertical streamline deformation, as shown in figure 1:
step 1: carrying out homogenization heat treatment on the TA18 titanium alloy cast ingot subjected to three times of vacuum consumable smelting, wherein the heating temperature is as follows: 1180-1260 ℃ and preserving heat for 60-90 h.
Step 2: the blank is heated to 1180-1200 ℃, forging upsetting/pulling alternate deformation mode parallel to the streamline direction is adopted, the upsetting process adopts a ring/square tool to control the outer contour size and shape, the chamfering 16 side is chamfered after the drawing, and the single-step deformation of the upsetting/pulling process is 50-70%. The alloy has larger deformation resistance, the forging speed is set to be 10-15 mm/s by adopting isostatic pressing equipment of a press, the final forging temperature is more than or equal to 960 ℃, and aluminum silicate heat preservation cotton with upper cover and lower cover is used for cooling after forging. Multiple passes of pre-deformation may be performed, but no more than 3 passes total.
Step 3: heating the blank at 840-860 ℃ and adopting a forging/drawing alternate deformation mode perpendicular to the streamline direction, controlling the external contour size and shape by adopting a square tool in the upsetting process, chamfering 16 sides after drawing, and adopting a press isostatic pressing device for deformation 55-70%, wherein the forging speed is set to be 10-15 mm/s, the final forging temperature is more than or equal to 750 ℃, and the aluminum silicate heat preservation cotton is padded up and down for covering after forging for cooling. Multiple passes of pre-deformation may be performed, but no more than 2 passes total.
Step 4: and (3) carrying out recrystallization annealing heat treatment on the blank, and preserving heat for 6-8 hours at the temperature of 820-840 ℃.
Step 5: heating the blank at 1080-1100 ℃, adopting a forging/drawing alternate deformation mode parallel to the streamline direction, controlling the external contour size and shape by adopting a square tool in the upsetting process, chamfering 16 sides after drawing, and adopting a press isostatic pressing device for deformation 30% -50%, wherein the forging speed is set to be 5-10 mm/s, the final forging temperature is not less than 985 ℃, and the aluminum silicate heat preservation cotton with caps is padded up and down after forging for cooling. And (5) completing 1 time.
Step 6: heating the blank at 1050-1080 ℃, adopting a forging/drawing alternate deformation mode perpendicular to the streamline direction, controlling the external contour size and shape by adopting a square tool in the upsetting process, chamfering 16 sides after drawing, and adopting a press isostatic pressing device for deformation 30% -50%, wherein the forging speed is set to be 5-10 mm/s, the final forging temperature is not less than 985 ℃, and the aluminum silicate heat preservation cotton with caps is padded up and down after forging for cooling. And (5) completing 1 time.
Step 7: heating the blank at 940-960 ℃, adopting forging/drawing alternate deformation mode parallel to the streamline direction, adopting a ring/square tool to control the outer contour size and shape in the upsetting process, rolling after drawing, the deformation is 20-40%, adopting 100MN oil press isostatic pressing equipment for forging, setting the forging speed to be 5-10 mm/s, the final forging temperature is more than or equal to 750 ℃, and then, padding up and covering aluminum silicate heat preservation cotton for cooling after forging, and completing 1 fire.
Through adding cogging forging to the large-specification bar before barren and die forging, the problem of low flaw detection level of the original large-specification bar can be effectively solved.
Examples:
step 1: the TA18 material section under sawing machine with the size of phi 650 multiplied by 2000 (L) mm is subjected to homogenization treatment before forging, and then is heated in an electric furnace at 840 ℃ and is preserved for 72 hours. Wherein: r is the chord direction, L is the axial direction.
Step 2: the blank is heated to 1200 ℃, and phi 650 multiplied by 2000 (L) mm is upset by 1 st fire to phi 1100 multiplied by 698 (L) mm (deformation of 65.1%) along the direction parallel to the streamline, and the blank is controlled by adopting an annular tool. Then, phi 1100X 698 (L) mm was drawn out in a direction parallel to the streamline to ≡617X 1744 (L) (deformation 60%), and the whole was chamfered in all directions. The forging and pressing speed is set to be 10mm/s by adopting a 10000T rapid forging machine, the final forging temperature is not less than 985 ℃, and aluminum silicate heat preservation cotton is covered on the upper part and the lower part after forging and is cooled.
The blank was heated by fire 2 at 1180 ℃. Upsetting in a direction parallel to the streamline of ≡617×1744 (L) mm to ≡1015×644 (L) mm (deformation of 63%), and adopting square tool control. And drawing out ≡1015×644 (L) mm to ≡684×1418 (L) (deformation 55.6%) in a direction parallel to the streamline, and chamfering. The forging and pressing speed is set to be 10mm/s by adopting a 10000T rapid forging machine, the final forging temperature is not less than 985 ℃, and aluminum silicate heat preservation cotton is covered on the upper part and the lower part after forging and is cooled.
Step 3: heating the blank at 860 ℃, upsetting ≡684×1418 (L) along the direction perpendicular to the streamline direction by 1 st fire to ≡1190×468 (L) (deformation 67%), and controlling by adopting a square tool. And drawing out ≡1190×468 (L) to ≡783×1080 (R) (deformation 56.7%) in a direction perpendicular to the streamline, and chamfering the eight directions. Adopting a 10000T quick forging machine to carry out forging and pressing, wherein the forging and pressing speed is set to be 15mm/s, and the final forging temperature is more than or equal to 750 ℃; and (5) padding up after forging, and covering aluminum silicate heat-insulating cotton up and down for cooling.
The blank was heated by fire 2 at 860 ℃. And (3) upsetting the steel plate in the direction perpendicular to the streamline to the length of ≡783×1080 (R) (deformation 66%), and controlling the steel plate by adopting a square tool. And drawing out ≡1343×367 to ≡849×918mm (R) (deformation 60%) along the direction perpendicular to the streamline, and chamfering the eight directions. The forging and pressing speed is set to 15mm/s by adopting a 10000T quick forging machine, the final forging temperature is more than or equal to 750 ℃, and aluminum silicate heat preservation cotton is covered on the upper part and the lower part after forging and is cooled.
Step 4: the blank is subjected to recrystallization annealing heat treatment, and is heated to 840 ℃ by an electric furnace and is kept for 8 hours.
Step 5: heating the blank at 1100 ℃, upsetting in the direction perpendicular to a streamline, upsetting to ≡1145×505 (R) mm (deformation 45%), controlling the upsetting process by adopting a square tool, drawing to ≡1145×505 (R) mm (deformation 44.4%) in the direction parallel to the streamline, chamfering in the eight directions, adopting a 10000T rapid forging machine, setting the forging speed to 8mm/s, and cooling by using aluminum silicate heat preservation cotton with upper and lower covers after forging at a final forging temperature of not less than 985 ℃, wherein the forging is completed for 1 time.
Step 6: heating the blank at 1100 ℃, upsetting in the direction parallel to a streamline, upsetting to ≡1145×505 (L) mm (deformation 45%), controlling the upsetting process by adopting a square tool, drawing to ≡1145×505 (L) mm (deformation 44.4%) in the direction perpendicular to the streamline, chamfering in the eight directions, adopting a 10000T rapid forging machine, setting the forging speed to 8mm/s, and cooling by using aluminum silicate heat preservation cotton with upper and lower covers after forging at a final forging temperature of not less than 985 ℃, wherein the forging is completed for 1 time.
Step 7: heating the blank at 960 ℃, upsetting in the direction parallel to a streamline, upsetting to ≡1083×909 (L) mm to ≡1083×564 (L) mm (deformation 38%), controlling the upsetting process by adopting a square tool, drawing to ≡1083×564mm (L) mm (deformation 20%), rolling after drawing, and cooling by adopting a 10000T rapid forging machine, wherein the forging speed is set to be 10mm/s, the final forging temperature is not less than 750 ℃, and the aluminum silicate heat preservation cotton is padded up and down after forging, so that the process is completed by 1 fire.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered in the scope of the present invention.
Claims (8)
1. A method for preparing a TA18 titanium alloy large-size bar with high flaw detection level by a short process is characterized by comprising the following steps:
step 1: carrying out homogenization heat treatment on the TA18 titanium alloy cast ingot subjected to three times of vacuum consumable smelting to obtain a blank;
step 2: heating the blank for the first time at 1180-1200 ℃ and adopting forging/drawing alternate deformation parallel to the streamline direction to obtain a first intermediate blank;
step 3: heating the first intermediate blank for the second time at 840-860 ℃ and adopting forging/drawing alternate deformation perpendicular to the streamline direction to obtain a second intermediate blank;
step 4: carrying out recrystallization annealing heat treatment on the second intermediate blank, and preserving heat for 6-8 hours at the temperature of 820-840 ℃;
step 5: heating the crystallized and annealed second intermediate blank for the third time at 1080-1100 ℃ and adopting forging upsetting/pulling alternate deformation parallel to the streamline direction to obtain a third intermediate blank;
step 6: heating the third intermediate blank for the fourth time at 1050-1080 ℃ and adopting forging/drawing alternate deformation perpendicular to the streamline direction to obtain a fourth intermediate blank;
step 7: and heating the third intermediate blank for the fifth time at 940-960 ℃, and adopting forging/drawing alternate deformation parallel to the streamline direction.
2. The method of claim 1, wherein the homogenization treatment of the TA18 titanium alloy is performed at a heating temperature: 1180-1260 ℃ and preserving heat for 60-90 h.
3. The method of claim 1, wherein the first heating is performed using a forge upsetting/drawing alternating deformation parallel to the streamline direction, comprising:
upsetting, drawing and chamfering 8 sides are carried out within 1 fire time;
the first intermediate blank is padded after forging, and aluminum silicate heat-insulating cotton is covered for cooling;
wherein, the upsetting process adopts a ring/square tool to control the size and shape of the outer contour; the deformation of a single working step in the upsetting/drawing process is controlled to be 50% -70%; the final forging temperature is more than or equal to 960 ℃.
4. The method of claim 1, wherein the second heating process uses alternate forging/drawing deformation perpendicular to the flow line direction, comprising:
upsetting, drawing and chamfering 8 sides are carried out within 1 fire time;
the second intermediate blank is padded after forging, and aluminum silicate heat-insulating cotton is covered for cooling;
wherein, the upsetting process adopts a square tool to control the external contour size and shape, the deformation is controlled to be 55-70%, and the final forging temperature is more than or equal to 750 ℃.
5. The method of claim 1, wherein the third heating is performed using a forging/drawing alternate deformation parallel to the streamline direction, comprising:
upsetting, drawing and chamfering 8 sides are carried out within 1 fire time;
the third intermediate blank is padded after forging, and aluminum silicate heat-insulating cotton is covered for cooling;
wherein, the upsetting process adopts a square tool to control the external contour size and shape, the deformation is controlled to be 30-50%, the final forging temperature is more than or equal to 985 ℃, and aluminum silicate heat preservation cotton with upper and lower covers is padded after forging for cooling.
6. The method of claim 1, wherein the fourth heating process uses alternate forging/drawing deformation perpendicular to the flow line direction, comprising:
upsetting, drawing and chamfering 8 sides are carried out within 1 fire time;
the fourth intermediate blank is padded after forging, and aluminum silicate heat-insulating cotton is covered for cooling;
wherein, the upsetting process adopts a square tool to control the external contour size and shape, the deformation is controlled to be 30-50%, and the final forging temperature is more than or equal to 900 ℃.
7. The method of claim 1, wherein the fifth heating is performed using alternate forging/drawing deformation horizontally to the streamline direction, comprising:
upsetting, drawing out and rounding are carried out within 1 fire time;
after forging, the aluminum silicate heat-insulating cotton with upper and lower covers is padded up for cooling, and cogging is completed;
wherein, the upsetting process adopts a ring/square tool to control the external contour size and shape, the rolling is carried out after the drawing, the deformation is controlled to be 20-40%, and the final forging temperature is more than or equal to 750 ℃.
8. The method according to claim 3 or 4, characterized in that the method further comprises:
if the deformation cannot be achieved in one fire in the first or second heating process, performing multi-fire pre-deformation, and not exceeding 3 fire in total.
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|---|---|---|---|---|
| US6077369A (en) * | 1994-09-20 | 2000-06-20 | Nippon Steel Corporation | Method of straightening wire rods of titanium and titanium alloy |
| CN109622837A (en) * | 2018-12-11 | 2019-04-16 | 陕西宏远航空锻造有限责任公司 | A kind of preparation method and device of the TC11 titanium alloy biscuit that high flaw detection is horizontal |
| CN110592508A (en) * | 2019-09-12 | 2019-12-20 | 中国航发北京航空材料研究院 | Low-cost and high-performance titanium alloy short-process forging process |
| CN111906498A (en) * | 2020-06-16 | 2020-11-10 | 陈胜川 | Processing method of TA18 titanium alloy seamless pipe for bicycle frame |
| CN114799002A (en) * | 2022-03-22 | 2022-07-29 | 西安聚能高温合金材料科技有限公司 | Forging method of super-large-specification high-temperature alloy cake blank |
-
2022
- 2022-12-14 CN CN202211608235.XA patent/CN116005089B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6077369A (en) * | 1994-09-20 | 2000-06-20 | Nippon Steel Corporation | Method of straightening wire rods of titanium and titanium alloy |
| CN109622837A (en) * | 2018-12-11 | 2019-04-16 | 陕西宏远航空锻造有限责任公司 | A kind of preparation method and device of the TC11 titanium alloy biscuit that high flaw detection is horizontal |
| CN110592508A (en) * | 2019-09-12 | 2019-12-20 | 中国航发北京航空材料研究院 | Low-cost and high-performance titanium alloy short-process forging process |
| CN111906498A (en) * | 2020-06-16 | 2020-11-10 | 陈胜川 | Processing method of TA18 titanium alloy seamless pipe for bicycle frame |
| CN114799002A (en) * | 2022-03-22 | 2022-07-29 | 西安聚能高温合金材料科技有限公司 | Forging method of super-large-specification high-temperature alloy cake blank |
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